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Organic Chemistry – Some Basic Principles And Techniques

Question
CBSEENCH11007486

What is an alkyl group? Name the different alkyl groups which originate from:
(i) Ethane                (ii) Propane
(iii) n-Butane           (iv) Iso-butane.

Solution
Alkyl group: The elimination of a hydrogen atom attached to a particular carbon of an alkane leads to an alkyl group.
stack straight C subscript straight n straight H subscript 2 straight n plus 1 end subscript with Alkane below space minus space straight H space rightwards arrow with negative straight H on top space stack space straight C subscript straight n straight H subscript 2 straight n plus 1 end subscript with Alkyl space group below
The alkyl group is also represented as –R. The Alkyl groups originating from different alkanes are:
(i) Ethane.
stack stack CH subscript 3 with straight P on top with Ethane below space minus space stack CH subscript 3 with straight P on top space space rightwards arrow with negative straight H left parenthesis 1 degree right parenthesis on top space space stack CH subscript 3 space minus space CH subscript 2 space minus space with Ethyl space group below
(ii) Propane. 

(iii) n-Butane.


(iv) Isobutane.